T3 Time Out debugging

[User4069]

Been having high latency all the time and frequent disconnects. CS mentioned to me they see a high amount of T3 Time Outs though I haven't been able to verify myself through any of the logs. I do have a tech coming out soon, just not soon enough...lol

@Datalink Anything you can see here that looks off? 

I'm no expert but the SNR looks to a little outside the normal range and why are there so many Uncorrectable Codewords? I'd imagine this goes hand in hand with the not normal looking SNR?

Cable Modem

HW Version:2.2

Vendor:Technicolor

BOOT Version:S1TC-3.49.18.14

Core Version:1.0

Model:CGM4140COM

Product Type:XB6

Flash Part:8192 MB

Download Version:Prod_21.3_d31 & Prod_21.3

IndexLock StatusFrequencySNRPower LevelModulation

Downstream

Channel Bonding Value

23

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

24

25

26

27

28

29

30

31

32

34

33

34

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

Locked

693 MHz

627 MHz

849 MHz

855 MHz

861 MHz

579 MHz

585 MHz

591 MHz

597 MHz

603 MHz

609 MHz

615 MHz

621 MHz

633 MHz

639 MHz

645 MHz

651 MHz

657 MHz

663 MHz

669 MHz

675 MHz

681 MHz

687 MHz

699 MHz

705 MHz

711 MHz

717 MHz

723 MHz

825 MHz

831 MHz

837 MHz

843 MHz

920 MHz

350000000

920000000

44.5 dB

45.1 dB

43.5 dB

43.4 dB

42.8 dB

45.2 dB

45.3 dB

45.4 dB

45.3 dB

45.1 dB

45.3 dB

45.3 dB

45.0 dB

45.2 dB

45.0 dB

44.8 dB

44.8 dB

44.6 dB

44.7 dB

44.8 dB

43.4 dB

44.3 dB

44.5 dB

44.3 dB

44.1 dB

44.0 dB

44.1 dB

44.1 dB

44.1 dB

44.0 dB

43.7 dB

43.5 dB

42.2 dB

45.3 dB

42.1 dB

3.7 dBmV

4.0 dBmV

3.5 dBmV

3.3 dBmV

2.9 dBmV

3.6 dBmV

3.7 dBmV

3.8 dBmV

3.9 dBmV

4.0 dBmV

3.9 dBmV

3.9 dBmV

3.9 dBmV

4.0 dBmV

4.0 dBmV

3.7 dBmV

3.7 dBmV

3.7 dBmV

3.8 dBmV

3.8 dBmV

3.6 dBmV

3.5 dBmV

3.7 dBmV

3.6 dBmV

3.4 dBmV

3.2 dBmV

3.3 dBmV

3.3 dBmV

4.1 dBmV

4.0 dBmV

3.7 dBmV

3.6 dBmV

2.3 dBmV

3.8 dBmV

2.2 dBmV

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

256 QAM

OFDM

OFDM

OFDM

IndexLock StatusFrequencySymbol RatePower LevelModulationChannel Type

Upstream	Channel Bonding Value
1	2	3	4
Locked	Locked	Locked	Locked
21 MHz	25 MHz	32 MHz	38 MHz
2560	5120	5120	5120
42.0 dBmV	45.0 dBmV	46.5 dBmV	46.5 dBmV
QAM	QAM	QAM	QAM
TDMA_AND_ATDMA	ATDMA	ATDMA	ATDMA

IndexUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords

CM Error Codewords
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34
2122933806	1341793761	1341802959	1341836495	1341864141	1341896284	1341918384	1341941513	1341961907	1341979610	1342047959	1342073154	1346767754	1346778723	1342568715	1342590537	1342612870	1342627067	1342643300	1342668005	1342752599	1342768679	1342785460	1342799578	1342812023	1342831790	1342852916	1342872422	1342883274	1342902489	1342921152	1342900673	2358375457	2122933806
950992	143	87	88	113	106	145	119	110	136	115	106	257	268	126	166	147	142	126	163	199	186	163	151	137	153	119	128	94	112	84	96	921256275	950992
0	535	500	499	474	573	532	560	570	542	564	572	1198	1185	553	513	528	537	553	510	476	486	509	501	520	522	485	490	493	495	503	491	20309	0

[RogersCorey]

Greetings @User4069 

Please let us know how your services fare after the technician has left. If you still continue to have issues, please update us here with a fresh set of readings so that we may further assist. 

Regards,

RogersCorey

[Datalink]

@User4069 do you have Fibre to the Home service?   In your case the modem would still be fed via coax cable.  Your signal levels are really good, but the upstream levels are elevated, still within limits but above the normal 36 to 40 dBmV range.  That would fit with the typical RfoG service where a large splitter is used to drop the inbound signal levels as the Fibre Optical Network Terminal output to the modem is too high.  That also drives up the modem's upstream signal levels, but, they're still within limits. 

[User4069]

Hey Datalink,

I appreciate you replying! I do not have Fiber Optical to the home and I still have coax to my modem. There is an attenuator on the end of my coax going into my modem though. 

[User4069]

Just to partially close the loop on this. The tech visited my house and did the regular debug steps and ruled out modem issues. It turns out there is an ongoing network issue in my area/neighborhood that's causing upload latency to be a constant 300-500ms. iirc it has something to do with the upload modules having issues. This is an ongoing issue and it isn't hasn't been classified as an outage.